Language can't describe reality. Literature has no stable reference, no real meaning. Each reader's interpretation is equally valid, more important than the author's intention. In fact, nothing in life has meaning. Reality is subjective. Values and truths are subjective. Life itself is a kind of illusion. Blah, blah, blah, let's have another scotch.
This means that the mind or spirit is present anywhere, because it is nowhere attached to any particular place. And it can remain present because, even when related to this or that object, it does not cling to it by reflection and thus lose its original mobility.